import { describe, it, expect } from 'vitest';

// ─── Test: GuardianPactsTab barrel export ──────────────────────────────────────

describe('GuardianPactsTab module structure', () => {
  it('exports GuardianPactsTab from barrel index', async () => {
    const mod = await import('./GuardianPactsTab');
    expect(mod.GuardianPactsTab).toBeDefined();
    expect(typeof mod.GuardianPactsTab).toBe('function');
  });

  it('GuardianPactsTab has correct displayName', async () => {
    const { GuardianPactsTab } = await import('./GuardianPactsTab');
    expect(GuardianPactsTab.displayName).toBe('GuardianPactsTab');
  });
});

// ─── Test: Barrel export includes GuardianPactsTab ─────────────────────────────

describe('Tab barrel export', () => {
  it('includes GuardianPactsTab in the tabs index', async () => {
    const mod = await import('@/components/game/tabs');
    expect(mod.GuardianPactsTab).toBeDefined();
    expect(typeof mod.GuardianPactsTab).toBe('function');
  });
});

// ─── Test: Guardian data integrity ─────────────────────────────────────────────

describe('Guardian data', () => {
  it('all guardians have required fields', async () => {
    const { GUARDIANS } = await import('@/lib/game/constants/guardians');
    for (const [floor, def] of Object.entries(GUARDIANS)) {
      expect(def.name).toBeTruthy();
      expect(def.element).toBeTruthy();
      expect(def.hp).toBeGreaterThan(0);
      expect(def.power).toBeGreaterThan(0);
      expect(def.boons.length).toBeGreaterThan(0);
      expect(def.pactCost).toBeGreaterThan(0);
      expect(def.pactTime).toBeGreaterThan(0);
      expect(def.uniquePerk).toBeTruthy();
      expect(def.signingCost).toBeTruthy();
      expect(def.signingCost.mana).toBeGreaterThan(0);
      expect(def.signingCost.time).toBeGreaterThan(0);
      expect(def.unlocksMana.length).toBeGreaterThan(0);
      expect(def.damageMultiplier).toBeGreaterThan(0);
      expect(def.insightMultiplier).toBeGreaterThan(0);
    }
  });

  it('guardians are defined at expected floors', async () => {
    const { GUARDIANS } = await import('@/lib/game/constants/guardians');
    const expectedFloors = [10, 20, 30, 40, 50, 60, 80, 90, 100];
    for (const floor of expectedFloors) {
      expect(GUARDIANS[floor]).toBeDefined();
    }
  });

  it('guardian boons have valid types', async () => {
    const validBoonTypes = [
      'maxMana', 'manaRegen', 'castingSpeed', 'elementalDamage', 'rawDamage',
      'critChance', 'critDamage', 'spellEfficiency', 'manaGain', 'insightGain',
      'studySpeed', 'prestigeInsight',
    ];
    const { GUARDIANS } = await import('@/lib/game/constants/guardians');
    for (const def of Object.values(GUARDIANS)) {
      for (const boon of def.boons) {
        expect(validBoonTypes).toContain(boon.type);
        expect(boon.value).toBeGreaterThan(0);
        expect(boon.desc).toBeTruthy();
      }
    }
  });
});

// ─── Test: Prestige store pact state ───────────────────────────────────────────

describe('Prestige store pact state', () => {
  it('has correct initial pact state shape', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(Array.isArray(state.defeatedGuardians)).toBe(true);
    expect(Array.isArray(state.signedPacts)).toBe(true);
    expect(typeof state.pactSlots).toBe('number');
    expect(state.pactSlots).toBeGreaterThanOrEqual(1);
    expect(state.pactRitualFloor).toBeNull();
    expect(state.pactRitualProgress).toBe(0);
  });

  it('startPactRitual is a function', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(typeof state.startPactRitual).toBe('function');
  });

  it('cancelPactRitual is a function', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(typeof state.cancelPactRitual).toBe('function');
  });

  it('completePactRitual is a function', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(typeof state.completePactRitual).toBe('function');
  });

  it('defeatGuardian is a function', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(typeof state.defeatGuardian).toBe('function');
  });

  it('removePact is a function', async () => {
    const { usePrestigeStore } = await import('@/lib/game/stores/prestigeStore');
    const state = usePrestigeStore.getState();
    expect(typeof state.removePact).toBe('function');
  });
});

// ─── Test: File size limit ─────────────────────────────────────────────────────

describe('File size limits (400 lines max)', () => {
  it('GuardianPactsTab.tsx is under 400 lines', async () => {
    const fs = await import('fs');
    const path = await import('path');
    const filePath = path.join(__dirname, 'GuardianPactsTab.tsx');
    const content = fs.readFileSync(filePath, 'utf-8');
    const lines = content.split('\n').length;
    expect(lines).toBeLessThan(400);
  });
});